Apple Cinema Tools 4 - Manual (Page 194)

Considerations When Exporting to Videotape
You may want to make a videotape of your edited program, either to make it easier to
view the program or to provide a visual reference for the negative cutter. There are a few
ways to create a videotape from an edited sequence, and these methods are explained
in the Final Cut Pro documentation. However, if you edited video at 24 fps and you want
to create a PAL or NTSC videotape, there are additional considerations explained here.
When you make a videotape from a 24 fps sequence, some video output devices create
an NTSC or PAL signal by inserting extra fields as needed to go from 24 fps to 25 fps or
29.97 fps. Such a tape is generally fine for viewing, but not as accurate as it should be if
it is to be used as a visual reference in cutting the negative. Make sure to let your negative
cutter know if there are issues with the videotape (for example, if the video occasionally
displays the wrong frame).
Considerations When Exporting Audio
Depending on your project’s needs, you may be able to use the edited audio from
Final Cut Pro directly in the film’s release print. More often you will want to finish the
edited audio using a specialized application or a facility specializing in audio finishing.
This is typically where sound effects, music, and any dialogue are added or enhanced.
There are a couple of items to consider when exporting audio:
• The type of audio file required: You can export an Open Media Framework (OMF) or
Audio Interchange File Format (AIFF) file.
• The audio speed: Depending on how the video was transferred, you may have slightly
altered the speed of the audio to maintain synchronization.
If you decide to recapture and reedit the audio at an audio post-production facility, see
Exporting an Audio EDL for details.
OMF Files
An OMF file contains not only the audio, but also a description of the audio edits. Digital
Audio Workstations (DAWs) that can import OMF files can take advantage of having the
edit In and Out points along with other information, such as cross fades, enabling them
to make small changes. OMF files typically contain all of the audio tracks used in the
program (other export formats have limits).
Another advantage of OMF files is that they can contain the audio and edit information
from non-timecode-based sources, such as audio CDs. (Audio EDLs describe only edits
using timecode-based sources and do not include any references to sources such as audio
CDs.)
See the Final Cut Pro documentation for information about exporting OMF files.
194 Chapter 11 Export Considerations and Creating Audio EDLs